SmaCC: Reporting error location

[joelreymont]

Assuming I'n in something like visitNumber or visitFunction of the expression evaluator example, how do I report the line number and offset of the token that's giving me trouble?

I see that each token has a start instance variable but what about the line number? @j-brant

[j-brant]

Every token has its startPosition and stopPosition. Nodes also have these and they are computed by looking at all children nodes and tokens.

[joelreymont]

How do I convert startPosition to line number and character offset, though?

Do I need to manually increment line numbers in a EOL production and associate a start position with each line?

[girba]

That's the job of the string.

'12
34
67
9
0' lineNumberCorrespondingToIndex: 5